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Understanding Our Deck Product Sizes

All of our products are listed by their standard (nominal) sizes. So, while the nominal size for a rough cut spindle may be 2″ x 2″, for example, the actual size of the finished spindle is a bit smaller. This is because of the milling process. In order to achieve the proper shape, style, and finish, the rough cut lumber is run through a wood planer. As a result, the finished product has a smoother finish and is a bit smaller. At this point in the process, while the nominal size of the spindle is 2″ x 2″, the actual dimensions are 1-3/8″ by 1-3/8″.

Be sure to keep this in mind while browsing our site and ordering your products. View our size chart below for examples of the actual sizes of some of our popular products.


Product Standard (Nominal) Size Actual Finished Size
Colonial Spindle 2″ x 2″ 1-3/8″ x 1-3/8″
Heritage Deck Spindle 3″ x 3″ 2-1/4″ x 2-1/4″
Lamp Post 4″ x 4″ 3-1/4″ x 3-1/4″
Lancaster Post Cap 6″ x 6″ 5-5/8″ x 5-5/8″


Please note that these sizes are an industry standard. If you go to a home improvement store, you will find the same thing with their lumber sizes. If you have any questions about product sizing, please don’t hesitate to contact us.

S&L Spindles Understanding Deck Railing Sizes

Helpful Resources

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How-tos - Deck & Railing Installation Guides

How-To Guides

We have many short Do It Yourself articles on all of our products. For example, if you are looking for advice on working with our spindles, click here.

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Baluster Calculator

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S&L Spindles Shipping Info

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